Friction clutch for sound reproducing machines



Jan. 5, 1932. c. w. EBELING 1,839,302

FRICTION CLUTCH FOR SOUND REPRODUCING MACHINES Original Filed Sept. 23,1929 gwuento o Patented Jan. 5, 1932 ire TATES PA TEN CHARLES w.EBELING, on NEW YORK, n. Y., Assrenoa so rnononrscoonronarioiv,

on NEW YQIRK, N. Y., A oonronerron or new Yon-K FRICTION CLUTCH FORSOUND REPRODITCING MACHINES Original application filed September 23,1929, Serial No. 394,571. Divided and. this application. filed October21, 1930. Serial No. 430,209.

This invention relates to improvements in sound reproducing machines,the-same being a division of the application filed September 23, 1929,Serial #394,571, and relating more particularly to the mechanism bymeans of,

which the turn table is connected to the driving mechanism in a soundfiltering relation.

Another object of this invention is the provision of a sound deadeningbrake device interposed between the turntable and the spindle, wherebywhen the spindle is started or stopped, the inertia of the turntable istaken care of, and thus the instant starting or stopping of theturntable is accomplished, the brake device also acting as a sounddeadening or filtering means in conjunction with the driving gear as setforth in the parent application.

V'Vith the foregoing and other objects in view, which will appear as thedescription proceeds, the invention resides in the combination andarrangement of parts and in the details of construction hereinafterdescribed and claimed, it being understood that changes in the preciseembodiment of the invention herein disclosed can be made within thescope of what is claimed without departing from the spirit of theinvention.

In the accompanying drawings:

Figure 1 is a side elevation of a complete sound reproducing machinewith the present invention applied thereto.

Figure 2 is a perspective View of the sound deadening and braking deviceforming the coupling between the turntable and the operating spindle. I

Referring to drawings the present device includes a main casing or base5, which in turn supports a base plate 6. This base plate 6 has mountedthereon, a casing 7 in which ismounted the driving mechanism (not shown)for the spindle 22 to which spindle is attached a casting 8 rotatablymounted within the socketed member 9' of the casing 7. The member 8 isprovided with an arm 23, which in turn carries a pin 24: by means ofwhich the turntable brake and transmission attaching member is attached.This latter member clearly shown in Figure 2 consists of a resilientplate or strip 25 of bent metal, the same being provided with apertures31 and 32 which loosely'surround the pin 24: so that the aperturedterminal 38 which surrounds the shaft 22, and is out of contacttherewith, will carry the braking annulus 29 upon the upper facethereof, the purpose of which will presently appear. The short terminalof the member 25 as illustrated, rests upon the upper surface of the arm23 and assists the device in exerting an upward resilient tension sothat as the turntable 26 is placed upon the spindle 22, as illustratedin Figure 1, the concentricannular brake portion upon the under side ofthe turntable vwill rest and bear upon the braking annulus 29 and causea slight flexing of the member 25, the said member being sufficientlystifi to slightly and resiliently resist the weight of the turntable andproduce a braking action between the portion 35 of the turntable and thebraking annulus 29 and thus providing a sound filtering transmissionclutch between the spindle 22 and the turntable 26.

What is claimed is:

1. A sound reproducing machine including a driven spindle, a turn tabledetachably mounted thereon, and. a resilient connecting medium betweenthe two carried by the spindle and exerting a clutch action against theturntable, said. resilient connecting medium including a detachabledevice having two spaced terminals one of which is adapted to beconnected to the spindle and the other of which is provided with africtional engaging member for contacting the turntable.

2. A sound reproducing machine including a driven spindle, a turntabledetachablymounted thereon, and a resilient connecting DIGCllUl'Il'between the two carried by 13118 813111- dle and exerting a clutchaction against the turntable, said resilient connecting memberconsisting of an arm carried by the spindle and provided with anupstanding pin, a metal plate bent to provide a substantially V shapedapertured portion for engaging the pin With one terminal raised upon thearm, said plate being provided With an extension from the remainingterminal formed to surround the spindle but not to contact same, and aco-acting braking means carried by the latter and the adjacent portionof the turntable and forming a frictional clutch connection between thetwo.

In testimony whereof I affix my signature.

CHARLES W. EBELING.

